【摘要】 使用非均匀格子Boltzmann方法对后台阶流动进行了数值模拟。将流体流动区域划分为不同的子区域:对于每个子区域内部,分布函数使用均匀网格计算;对于区域边界,分布函数采用嵌套网格方法进行处理。数值计算结果与其它实验、数值结果相吻合。更多还原

【Abstract】 A numerical solution for two dimension incompressible flow over a backward-facing step is investigated by using a non-uniform lattice Boltzmann method.The basic idea of the simulation is to divide the flow domain into some regular sub-domains,the distribution function can be computed by uniform lattice Boltzmann method within sub-domains and by nested boundary scheme on the boundaries. The present results agree well with the numerical and experimental data available in the literature.更多还原